40b2_0d00

Offspring phenotype	Predicted ratio	Observed
Red flowers (RR)	1	38
Pink flowers (Rr)	2	88
White flowers (rr)	1	42

In a plant species with incomplete dominance, you cross two pink individuals (Rr × Rr) and score flower color.

Which statement is the alternative hypothesis (H_a) for this chi-square test?

The offspring proportions differ from 1:2:1. Correct The offspring proportions differ from 19:44:21. Incorrect The offspring proportions follow 1:2:1; observed differences are due to chance. Incorrect The cross's predicted offspring ratio changes with the sample size. Incorrect MC

93e6_7152

Offspring phenotype	Predicted ratio	Observed
Red flowers (RR)	1	36
Pink flowers (Rr)	2	69
White flowers (rr)	1	39

In a plant species with incomplete dominance, you cross two pink individuals (Rr × Rr) and score flower color.

Which statement is the alternative hypothesis (H_a) for this chi-square test?

The cross produces an offspring ratio different from 12:23:13. Incorrect The offspring proportions follow 1:2:1; observed differences are due to chance. Incorrect The observed counts are not exactly 36:72:36, in the table's category order. Incorrect The cross produces an offspring ratio different from 1:2:1. Correct MC

64eb_d113

Offspring phenotype	Predicted ratio	Observed
A–B–	1	59
A–bb	1	47
aaB–	1	50
aabb	1	44

You perform a dihybrid testcross (AaBb × aabb) and count the offspring phenotypes. Assume independent assortment and complete dominance.

Which statement is the alternative hypothesis (H_a) for this chi-square test?

The cross produces an offspring ratio different from 1:1:1:1. Correct The observed counts are not exactly 50:50:50:50, in the table's category order. Incorrect The cross's predicted offspring ratio changes with the sample size. Incorrect The cross produces a 1:1:1:1 ratio, allowing for differences due to chance. Incorrect MC

d693_71d7

Offspring phenotype	Predicted ratio	Observed
A–B–	9	126
A–bb	3	32
aaB–	3	42
aabb	1	8

You perform a dihybrid cross (AaBb × AaBb) and count the F₂ offspring phenotypes. Assume independent assortment and complete dominance.

Which statement is the alternative hypothesis (H_a) for this chi-square test?

The observed counts are not exactly 117:39:39:13, in the table's category order. Incorrect The offspring proportions differ from 63:16:21:4. Incorrect The cross produces a 9:3:3:1 ratio, allowing for differences due to chance. Incorrect The offspring proportions differ from 9:3:3:1. Correct MC

b354_dc2d

Offspring phenotype	Predicted ratio	Observed
A–B–	1	37
A–bb	1	58
aaB–	1	47
aabb	1	50

You perform a dihybrid testcross (AaBb × aabb) and count the offspring phenotypes. Assume independent assortment and complete dominance.

Which statement is the alternative hypothesis (H_a) for this chi-square test?

The cross's predicted offspring ratio changes with the sample size. Incorrect The offspring proportions differ from 1:1:1:1. Correct The offspring proportions differ from 37:58:47:50. Incorrect The cross produces a 1:1:1:1 ratio, allowing for differences due to chance. Incorrect MC

74e6_c770

Offspring phenotype	Predicted ratio	Observed
A–B–	1	81
A–bb	1	63
aaB–	1	83
aabb	1	85

You perform a dihybrid testcross (AaBb × aabb) and count the offspring phenotypes. Assume independent assortment and complete dominance.

Which statement is the alternative hypothesis (H_a) for this chi-square test?

The offspring proportions follow 1:1:1:1; observed differences are due to chance. Incorrect The cross's predicted offspring ratio changes with the sample size. Incorrect The offspring proportions differ from 1:1:1:1. Correct The offspring proportions differ from 81:63:83:85. Incorrect MC

a3db_f3a7

Offspring phenotype	Predicted ratio	Observed
Dominant phenotype (A–)	3	77
Recessive phenotype (aa)	1	31

You cross two heterozygous individuals (Aa × Aa) and score the offspring phenotypes.

Which statement is the alternative hypothesis (H_a) for this chi-square test?

The offspring proportions follow 3:1; observed differences are due to chance. Incorrect The cross produces an offspring ratio different from 77:31. Incorrect The cross's predicted offspring ratio changes with the sample size. Incorrect The cross produces an offspring ratio different from 3:1. Correct MC

9447_2bee

Offspring phenotype	Predicted ratio	Observed
A–B–	1	53
A–bb	1	62
aaB–	1	62
aabb	1	67

You perform a dihybrid testcross (AaBb × aabb) and count the offspring phenotypes. Assume independent assortment and complete dominance.

Which statement is the alternative hypothesis (H_a) for this chi-square test?

The offspring proportions differ from 53:62:62:67. Incorrect The observed counts are not exactly 61:61:61:61, in the table's category order. Incorrect The offspring proportions differ from 1:1:1:1. Correct The offspring proportions follow 1:1:1:1; observed differences are due to chance. Incorrect MC

1316_cf20

Offspring phenotype	Predicted ratio	Observed
A–B–	9	161
A–bb	3	52
aaB–	3	57
aabb	1	18

You perform a dihybrid cross (AaBb × AaBb) and count the F₂ offspring phenotypes. Assume independent assortment and complete dominance.

Which statement is the alternative hypothesis (H_a) for this chi-square test?

The cross produces a 9:3:3:1 ratio, allowing for differences due to chance. Incorrect The cross produces an offspring ratio different from 9:3:3:1. Correct The cross's predicted offspring ratio changes with the sample size. Incorrect The cross produces an offspring ratio different from 161:52:57:18. Incorrect MC

7735_c8de

Offspring phenotype	Predicted ratio	Observed
A–B–	9	149
A–bb	3	57
aaB–	3	55
aabb	1	11

You perform a dihybrid cross (AaBb × AaBb) and count the F₂ offspring phenotypes. Assume independent assortment and complete dominance.

Which statement is the alternative hypothesis (H_a) for this chi-square test?

The offspring proportions follow 9:3:3:1; observed differences are due to chance. Incorrect The observed counts are not exactly 153:51:51:17, in the table's category order. Incorrect The cross's predicted offspring ratio changes with the sample size. Incorrect The cross produces an offspring ratio different from 9:3:3:1. Correct MC

1717_a6e4

Offspring phenotype	Predicted ratio	Observed
A–B–	9	151
A–bb	3	48
aaB–	3	36
aabb	1	21

You perform a dihybrid cross (AaBb × AaBb) and count the F₂ offspring phenotypes. Assume independent assortment and complete dominance.

Which statement is the alternative hypothesis (H_a) for this chi-square test?

The offspring proportions differ from 151:48:36:21. Incorrect The offspring proportions follow 9:3:3:1; observed differences are due to chance. Incorrect The cross's predicted offspring ratio changes with the sample size. Incorrect The offspring proportions differ from 9:3:3:1. Correct MC

c05a_cd3c

Offspring phenotype	Predicted ratio	Observed
A–B–	1	44
A–bb	1	59
aaB–	1	57
aabb	1	48

You perform a dihybrid testcross (AaBb × aabb) and count the offspring phenotypes. Assume independent assortment and complete dominance.

Which statement is the alternative hypothesis (H_a) for this chi-square test?

The cross's predicted offspring ratio changes with the sample size. Incorrect The offspring proportions differ from 44:59:57:48. Incorrect The offspring proportions differ from 1:1:1:1. Correct The offspring proportions follow 1:1:1:1; observed differences are due to chance. Incorrect MC

f868_7667

Offspring phenotype	Predicted ratio	Observed
A–B–	9	130
A–bb	3	49
aaB–	3	47
aabb	1	14

You perform a dihybrid cross (AaBb × AaBb) and count the F₂ offspring phenotypes. Assume independent assortment and complete dominance.

Which statement is the alternative hypothesis (H_a) for this chi-square test?

The cross produces an offspring ratio different from 9:3:3:1. Correct The cross produces an offspring ratio different from 130:49:47:14. Incorrect The observed counts are not exactly 135:45:45:15, in the table's category order. Incorrect The cross produces a 9:3:3:1 ratio, allowing for differences due to chance. Incorrect MC

47a0_616f

Offspring phenotype	Predicted ratio	Observed
Red flowers (RR)	1	42
Pink flowers (Rr)	2	92
White flowers (rr)	1	50

In a plant species with incomplete dominance, you cross two pink individuals (Rr × Rr) and score flower color.

Which statement is the alternative hypothesis (H_a) for this chi-square test?

The offspring proportions follow 1:2:1; observed differences are due to chance. Incorrect The observed counts are not exactly 46:92:46, in the table's category order. Incorrect The cross produces an offspring ratio different from 1:2:1. Correct The cross's predicted offspring ratio changes with the sample size. Incorrect MC

b002_97bb

Offspring phenotype	Predicted ratio	Observed
Red flowers (RR)	1	44
Pink flowers (Rr)	2	82
White flowers (rr)	1	46

In a plant species with incomplete dominance, you cross two pink individuals (Rr × Rr) and score flower color.

Which statement is the alternative hypothesis (H_a) for this chi-square test?

The offspring proportions follow 1:2:1; observed differences are due to chance. Incorrect The observed counts are not exactly 43:86:43, in the table's category order. Incorrect The cross produces an offspring ratio different from 1:2:1. Correct The cross's predicted offspring ratio changes with the sample size. Incorrect MC

fcb0_e0f1

Offspring phenotype	Predicted ratio	Observed
A–B–	1	49
A–bb	1	40
aaB–	1	42
aabb	1	41

You perform a dihybrid testcross (AaBb × aabb) and count the offspring phenotypes. Assume independent assortment and complete dominance.

Which statement is the alternative hypothesis (H_a) for this chi-square test?

The cross's predicted offspring ratio changes with the sample size. Incorrect The cross produces an offspring ratio different from 1:1:1:1. Correct The offspring proportions follow 1:1:1:1; observed differences are due to chance. Incorrect The cross produces an offspring ratio different from 49:40:42:41. Incorrect MC

7583_f443

Offspring phenotype	Predicted ratio	Observed
Red flowers (RR)	1	49
Pink flowers (Rr)	2	122
White flowers (rr)	1	57

In a plant species with incomplete dominance, you cross two pink individuals (Rr × Rr) and score flower color.

Which statement is the alternative hypothesis (H_a) for this chi-square test?

The cross produces an offspring ratio different from 49:122:57. Incorrect The cross's predicted offspring ratio changes with the sample size. Incorrect The cross produces a 1:2:1 ratio, allowing for differences due to chance. Incorrect The cross produces an offspring ratio different from 1:2:1. Correct MC

5fee_d6ee

Offspring phenotype	Predicted ratio	Observed
Red flowers (RR)	1	57
Pink flowers (Rr)	2	111
White flowers (rr)	1	44

In a plant species with incomplete dominance, you cross two pink individuals (Rr × Rr) and score flower color.

Which statement is the alternative hypothesis (H_a) for this chi-square test?

The cross produces an offspring ratio different from 1:2:1. Correct The cross produces a 1:2:1 ratio, allowing for differences due to chance. Incorrect The cross's predicted offspring ratio changes with the sample size. Incorrect The cross produces an offspring ratio different from 57:111:44. Incorrect MC

9d5e_685e

Offspring phenotype	Predicted ratio	Observed
Dominant phenotype (A–)	3	75
Recessive phenotype (aa)	1	21

You cross two heterozygous individuals (Aa × Aa) and score the offspring phenotypes.

Which statement is the alternative hypothesis (H_a) for this chi-square test?

The cross produces a 3:1 ratio, allowing for differences due to chance. Incorrect The cross produces an offspring ratio different from 25:7. Incorrect The observed counts are not exactly 72:24, in the table's category order. Incorrect The cross produces an offspring ratio different from 3:1. Correct MC

2569_9e42

Offspring phenotype	Predicted ratio	Observed
Dominant phenotype (A–)	3	123
Recessive phenotype (aa)	1	29

You cross two heterozygous individuals (Aa × Aa) and score the offspring phenotypes.

Which statement is the alternative hypothesis (H_a) for this chi-square test?

The offspring proportions differ from 3:1. Correct The offspring proportions follow 3:1; observed differences are due to chance. Incorrect The offspring proportions differ from 123:29. Incorrect The cross's predicted offspring ratio changes with the sample size. Incorrect MC

7c59_6089

Offspring phenotype	Predicted ratio	Observed
Dominant phenotype (A–)	3	112
Recessive phenotype (aa)	1	36

You cross two heterozygous individuals (Aa × Aa) and score the offspring phenotypes.

Which statement is the alternative hypothesis (H_a) for this chi-square test?

The cross produces an offspring ratio different from 3:1. Correct The observed counts are not exactly 111:37, in the table's category order. Incorrect The cross's predicted offspring ratio changes with the sample size. Incorrect The cross produces a 3:1 ratio, allowing for differences due to chance. Incorrect MC

d043_aecc

Offspring phenotype	Predicted ratio	Observed
A–B–	1	57
A–bb	1	52
aaB–	1	74
aabb	1	53

You perform a dihybrid testcross (AaBb × aabb) and count the offspring phenotypes. Assume independent assortment and complete dominance.

Which statement is the alternative hypothesis (H_a) for this chi-square test?

The observed counts are not exactly 59:59:59:59, in the table's category order. Incorrect The offspring proportions differ from 57:52:74:53. Incorrect The offspring proportions follow 1:1:1:1; observed differences are due to chance. Incorrect The offspring proportions differ from 1:1:1:1. Correct MC

952b_30c7

Offspring phenotype	Predicted ratio	Observed
Dominant phenotype (A–)	3	102
Recessive phenotype (aa)	1	26

You cross two heterozygous individuals (Aa × Aa) and score the offspring phenotypes.

Which statement is the alternative hypothesis (H_a) for this chi-square test?

The observed counts are not exactly 96:32, in the table's category order. Incorrect The offspring proportions differ from 3:1. Correct The cross produces a 3:1 ratio, allowing for differences due to chance. Incorrect The offspring proportions differ from 51:13. Incorrect MC

9022_f508

Offspring phenotype	Predicted ratio	Observed
Red flowers (RR)	1	49
Pink flowers (Rr)	2	98
White flowers (rr)	1	61

In a plant species with incomplete dominance, you cross two pink individuals (Rr × Rr) and score flower color.

Which statement is the alternative hypothesis (H_a) for this chi-square test?

The observed counts are not exactly 52:104:52, in the table's category order. Incorrect The cross's predicted offspring ratio changes with the sample size. Incorrect The cross produces a 1:2:1 ratio, allowing for differences due to chance. Incorrect The cross produces an offspring ratio different from 1:2:1. Correct MC

3ba4_9c10

Offspring phenotype	Predicted ratio	Observed
A–B–	9	153
A–bb	3	58
aaB–	3	53
aabb	1	24

You perform a dihybrid cross (AaBb × AaBb) and count the F₂ offspring phenotypes. Assume independent assortment and complete dominance.

Which statement is the alternative hypothesis (H_a) for this chi-square test?

The cross produces an offspring ratio different from 9:3:3:1. Correct The offspring proportions follow 9:3:3:1; observed differences are due to chance. Incorrect The observed counts are not exactly 162:54:54:18, in the table's category order. Incorrect The cross produces an offspring ratio different from 153:58:53:24. Incorrect MC

a1e1_8f4b

Offspring phenotype	Predicted ratio	Observed
A–B–	9	175
A–bb	3	45
aaB–	3	49
aabb	1	19

You perform a dihybrid cross (AaBb × AaBb) and count the F₂ offspring phenotypes. Assume independent assortment and complete dominance.

Which statement is the alternative hypothesis (H_a) for this chi-square test?

The offspring proportions follow 9:3:3:1; observed differences are due to chance. Incorrect The cross's predicted offspring ratio changes with the sample size. Incorrect The offspring proportions differ from 9:3:3:1. Correct The observed counts are not exactly 162:54:54:18, in the table's category order. Incorrect MC

3afc_b26b

Offspring phenotype	Predicted ratio	Observed
A–B–	1	72
A–bb	1	66
aaB–	1	67
aabb	1	55

You perform a dihybrid testcross (AaBb × aabb) and count the offspring phenotypes. Assume independent assortment and complete dominance.

Which statement is the alternative hypothesis (H_a) for this chi-square test?

The cross produces an offspring ratio different from 1:1:1:1. Correct The cross's predicted offspring ratio changes with the sample size. Incorrect The cross produces an offspring ratio different from 72:66:67:55. Incorrect The offspring proportions follow 1:1:1:1; observed differences are due to chance. Incorrect MC

b2cd_09ec

Offspring phenotype	Predicted ratio	Observed
A–B–	1	75
A–bb	1	72
aaB–	1	77
aabb	1	76

You perform a dihybrid testcross (AaBb × aabb) and count the offspring phenotypes. Assume independent assortment and complete dominance.

Which statement is the alternative hypothesis (H_a) for this chi-square test?

The offspring proportions follow 1:1:1:1; observed differences are due to chance. Incorrect The cross produces an offspring ratio different from 75:72:77:76. Incorrect The cross produces an offspring ratio different from 1:1:1:1. Correct The observed counts are not exactly 75:75:75:75, in the table's category order. Incorrect MC

2aa6_b354

Offspring phenotype	Predicted ratio	Observed
A–B–	1	38
A–bb	1	53
aaB–	1	53
aabb	1	56

You perform a dihybrid testcross (AaBb × aabb) and count the offspring phenotypes. Assume independent assortment and complete dominance.

Which statement is the alternative hypothesis (H_a) for this chi-square test?

The offspring proportions differ from 1:1:1:1. Correct The offspring proportions differ from 38:53:53:56. Incorrect The offspring proportions follow 1:1:1:1; observed differences are due to chance. Incorrect The observed counts are not exactly 50:50:50:50, in the table's category order. Incorrect MC

6ebb_2fab

Offspring phenotype	Predicted ratio	Observed
Dominant phenotype (A–)	3	63
Recessive phenotype (aa)	1	17

You cross two heterozygous individuals (Aa × Aa) and score the offspring phenotypes.

Which statement is the alternative hypothesis (H_a) for this chi-square test?

The offspring proportions differ from 3:1. Correct The cross's predicted offspring ratio changes with the sample size. Incorrect The offspring proportions differ from 63:17. Incorrect The offspring proportions follow 3:1; observed differences are due to chance. Incorrect MC

2ac6_c234

Offspring phenotype	Predicted ratio	Observed
Dominant phenotype (A–)	3	87
Recessive phenotype (aa)	1	25

You cross two heterozygous individuals (Aa × Aa) and score the offspring phenotypes.

Which statement is the alternative hypothesis (H_a) for this chi-square test?

The offspring proportions follow 3:1; observed differences are due to chance. Incorrect The observed counts are not exactly 84:28, in the table's category order. Incorrect The cross produces an offspring ratio different from 87:25. Incorrect The cross produces an offspring ratio different from 3:1. Correct MC

5233_3822

Offspring phenotype	Predicted ratio	Observed
Red flowers (RR)	1	64
Pink flowers (Rr)	2	122
White flowers (rr)	1	42

In a plant species with incomplete dominance, you cross two pink individuals (Rr × Rr) and score flower color.

Which statement is the alternative hypothesis (H_a) for this chi-square test?

The observed counts are not exactly 57:114:57, in the table's category order. Incorrect The cross produces an offspring ratio different from 1:2:1. Correct The offspring proportions follow 1:2:1; observed differences are due to chance. Incorrect The cross's predicted offspring ratio changes with the sample size. Incorrect MC

d064_4a36

Offspring phenotype	Predicted ratio	Observed
A–B–	9	139
A–bb	3	65
aaB–	3	56
aabb	1	12

You perform a dihybrid cross (AaBb × AaBb) and count the F₂ offspring phenotypes. Assume independent assortment and complete dominance.

Which statement is the alternative hypothesis (H_a) for this chi-square test?

The offspring proportions differ from 9:3:3:1. Correct The cross produces a 9:3:3:1 ratio, allowing for differences due to chance. Incorrect The cross's predicted offspring ratio changes with the sample size. Incorrect The observed counts are not exactly 153:51:51:17, in the table's category order. Incorrect MC

6241_9532

Offspring phenotype	Predicted ratio	Observed
A–B–	9	92
A–bb	3	19
aaB–	3	41
aabb	1	8

You perform a dihybrid cross (AaBb × AaBb) and count the F₂ offspring phenotypes. Assume independent assortment and complete dominance.

Which statement is the alternative hypothesis (H_a) for this chi-square test?

The cross produces an offspring ratio different from 92:19:41:8. Incorrect The observed counts are not exactly 90:30:30:10, in the table's category order. Incorrect The cross produces an offspring ratio different from 9:3:3:1. Correct The offspring proportions follow 9:3:3:1; observed differences are due to chance. Incorrect MC

98cb_48d3

Offspring phenotype	Predicted ratio	Observed
Red flowers (RR)	1	37
Pink flowers (Rr)	2	68
White flowers (rr)	1	47

In a plant species with incomplete dominance, you cross two pink individuals (Rr × Rr) and score flower color.

Which statement is the alternative hypothesis (H_a) for this chi-square test?

The cross's predicted offspring ratio changes with the sample size. Incorrect The cross produces a 1:2:1 ratio, allowing for differences due to chance. Incorrect The cross produces an offspring ratio different from 1:2:1. Correct The cross produces an offspring ratio different from 37:68:47. Incorrect MC

5819_bedb

Offspring phenotype	Predicted ratio	Observed
A–B–	1	75
A–bb	1	74
aaB–	1	73
aabb	1	62

You perform a dihybrid testcross (AaBb × aabb) and count the offspring phenotypes. Assume independent assortment and complete dominance.

Which statement is the alternative hypothesis (H_a) for this chi-square test?

The cross produces a 1:1:1:1 ratio, allowing for differences due to chance. Incorrect The offspring proportions differ from 75:74:73:62. Incorrect The offspring proportions differ from 1:1:1:1. Correct The cross's predicted offspring ratio changes with the sample size. Incorrect MC

949a_288a

Offspring phenotype	Predicted ratio	Observed
A–B–	1	59
A–bb	1	56
aaB–	1	58
aabb	1	63

You perform a dihybrid testcross (AaBb × aabb) and count the offspring phenotypes. Assume independent assortment and complete dominance.

Which statement is the alternative hypothesis (H_a) for this chi-square test?

The offspring proportions differ from 59:56:58:63. Incorrect The cross produces a 1:1:1:1 ratio, allowing for differences due to chance. Incorrect The offspring proportions differ from 1:1:1:1. Correct The observed counts are not exactly 59:59:59:59, in the table's category order. Incorrect MC

629a_e328

Offspring phenotype	Predicted ratio	Observed
Red flowers (RR)	1	55
Pink flowers (Rr)	2	108
White flowers (rr)	1	45

In a plant species with incomplete dominance, you cross two pink individuals (Rr × Rr) and score flower color.

Which statement is the alternative hypothesis (H_a) for this chi-square test?

The offspring proportions follow 1:2:1; observed differences are due to chance. Incorrect The cross's predicted offspring ratio changes with the sample size. Incorrect The observed counts are not exactly 52:104:52, in the table's category order. Incorrect The offspring proportions differ from 1:2:1. Correct MC

a551_088a

Offspring phenotype	Predicted ratio	Observed
A–B–	1	58
A–bb	1	60
aaB–	1	62
aabb	1	64

You perform a dihybrid testcross (AaBb × aabb) and count the offspring phenotypes. Assume independent assortment and complete dominance.

Which statement is the alternative hypothesis (H_a) for this chi-square test?

The offspring proportions follow 1:1:1:1; observed differences are due to chance. Incorrect The cross produces an offspring ratio different from 29:30:31:32. Incorrect The observed counts are not exactly 61:61:61:61, in the table's category order. Incorrect The cross produces an offspring ratio different from 1:1:1:1. Correct MC

4aad_5c05

Offspring phenotype	Predicted ratio	Observed
Red flowers (RR)	1	51
Pink flowers (Rr)	2	108
White flowers (rr)	1	53

In a plant species with incomplete dominance, you cross two pink individuals (Rr × Rr) and score flower color.

Which statement is the alternative hypothesis (H_a) for this chi-square test?

The cross produces an offspring ratio different from 1:2:1. Correct The cross produces an offspring ratio different from 51:108:53. Incorrect The cross produces a 1:2:1 ratio, allowing for differences due to chance. Incorrect The observed counts are not exactly 53:106:53, in the table's category order. Incorrect MC

d280_1b61

Offspring phenotype	Predicted ratio	Observed
A–B–	1	55
A–bb	1	56
aaB–	1	48
aabb	1	65

You perform a dihybrid testcross (AaBb × aabb) and count the offspring phenotypes. Assume independent assortment and complete dominance.

Which statement is the alternative hypothesis (H_a) for this chi-square test?

The cross produces an offspring ratio different from 1:1:1:1. Correct The observed counts are not exactly 56:56:56:56, in the table's category order. Incorrect The cross produces a 1:1:1:1 ratio, allowing for differences due to chance. Incorrect The cross's predicted offspring ratio changes with the sample size. Incorrect MC

39c6_0757

Offspring phenotype	Predicted ratio	Observed
Dominant phenotype (A–)	3	69
Recessive phenotype (aa)	1	19

You cross two heterozygous individuals (Aa × Aa) and score the offspring phenotypes.

Which statement is the alternative hypothesis (H_a) for this chi-square test?

The offspring proportions follow 3:1; observed differences are due to chance. Incorrect The observed counts are not exactly 66:22, in the table's category order. Incorrect The cross produces an offspring ratio different from 3:1. Correct The cross produces an offspring ratio different from 69:19. Incorrect MC

3130_6b39

Offspring phenotype	Predicted ratio	Observed
Dominant phenotype (A–)	3	60
Recessive phenotype (aa)	1	28

You cross two heterozygous individuals (Aa × Aa) and score the offspring phenotypes.

Which statement is the alternative hypothesis (H_a) for this chi-square test?

The offspring proportions differ from 3:1. Correct The observed counts are not exactly 66:22, in the table's category order. Incorrect The cross's predicted offspring ratio changes with the sample size. Incorrect The offspring proportions follow 3:1; observed differences are due to chance. Incorrect MC

4519_3fc6

Offspring phenotype	Predicted ratio	Observed
Dominant phenotype (A–)	3	84
Recessive phenotype (aa)	1	20

You cross two heterozygous individuals (Aa × Aa) and score the offspring phenotypes.

Which statement is the alternative hypothesis (H_a) for this chi-square test?

The offspring proportions differ from 21:5. Incorrect The offspring proportions follow 3:1; observed differences are due to chance. Incorrect The observed counts are not exactly 78:26, in the table's category order. Incorrect The offspring proportions differ from 3:1. Correct MC

aacd_530b

Offspring phenotype	Predicted ratio	Observed
Dominant phenotype (A–)	3	83
Recessive phenotype (aa)	1	21

You cross two heterozygous individuals (Aa × Aa) and score the offspring phenotypes.

Which statement is the alternative hypothesis (H_a) for this chi-square test?

The offspring proportions follow 3:1; observed differences are due to chance. Incorrect The offspring proportions differ from 83:21. Incorrect The offspring proportions differ from 3:1. Correct The cross's predicted offspring ratio changes with the sample size. Incorrect MC

6ecd_86ba

Offspring phenotype	Predicted ratio	Observed
Red flowers (RR)	1	62
Pink flowers (Rr)	2	114
White flowers (rr)	1	60

In a plant species with incomplete dominance, you cross two pink individuals (Rr × Rr) and score flower color.

Which statement is the alternative hypothesis (H_a) for this chi-square test?

The cross produces an offspring ratio different from 31:57:30. Incorrect The offspring proportions follow 1:2:1; observed differences are due to chance. Incorrect The observed counts are not exactly 59:118:59, in the table's category order. Incorrect The cross produces an offspring ratio different from 1:2:1. Correct MC

f489_e952

Offspring phenotype	Predicted ratio	Observed
Red flowers (RR)	1	34
Pink flowers (Rr)	2	83
White flowers (rr)	1	47

In a plant species with incomplete dominance, you cross two pink individuals (Rr × Rr) and score flower color.

Which statement is the alternative hypothesis (H_a) for this chi-square test?

The cross produces an offspring ratio different from 1:2:1. Correct The offspring proportions follow 1:2:1; observed differences are due to chance. Incorrect The cross's predicted offspring ratio changes with the sample size. Incorrect The observed counts are not exactly 41:82:41, in the table's category order. Incorrect MC

ccf9_9101

Offspring phenotype	Predicted ratio	Observed
A–B–	9	154
A–bb	3	48
aaB–	3	38
aabb	1	16

You perform a dihybrid cross (AaBb × AaBb) and count the F₂ offspring phenotypes. Assume independent assortment and complete dominance.

Which statement is the alternative hypothesis (H_a) for this chi-square test?

The cross's predicted offspring ratio changes with the sample size. Incorrect The offspring proportions differ from 9:3:3:1. Correct The cross produces a 9:3:3:1 ratio, allowing for differences due to chance. Incorrect The observed counts are not exactly 144:48:48:16, in the table's category order. Incorrect MC

c81b_cd9c

Offspring phenotype	Predicted ratio	Observed
Dominant phenotype (A–)	3	70
Recessive phenotype (aa)	1	22

You cross two heterozygous individuals (Aa × Aa) and score the offspring phenotypes.

Which statement is the alternative hypothesis (H_a) for this chi-square test?

The observed counts are not exactly 69:23, in the table's category order. Incorrect The cross produces a 3:1 ratio, allowing for differences due to chance. Incorrect The cross produces an offspring ratio different from 35:11. Incorrect The cross produces an offspring ratio different from 3:1. Correct MC

0bc6_20c7

Offspring phenotype	Predicted ratio	Observed
A–B–	9	153
A–bb	3	55
aaB–	3	58
aabb	1	22

You perform a dihybrid cross (AaBb × AaBb) and count the F₂ offspring phenotypes. Assume independent assortment and complete dominance.

Which statement is the alternative hypothesis (H_a) for this chi-square test?

The cross produces a 9:3:3:1 ratio, allowing for differences due to chance. Incorrect The cross produces an offspring ratio different from 9:3:3:1. Correct The observed counts are not exactly 162:54:54:18, in the table's category order. Incorrect The cross produces an offspring ratio different from 153:55:58:22. Incorrect